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The mulberry silkworm belongs to Bombycidae. It is an insect of complete metamorphosis. There are four stages of its life: egg, larva, pupa and moth. 桑蚕属鳞翅目蚕蛾科，是一种完全变态昆虫，一生经历卵、幼虫（蚕）、蛹、成虫（蛾）四个阶段。 blog.sina.com.cn